lvm or vxvm?

[Jun Zhang_4]

In the /opt/ignite/data/Rel_B.11.11/config file, it says if the root disk is greater than 2GB, the default must be lvm, only when the disk is < 2GB, vxvm is used. What is the reason to this?

Jun

[Geoff Wild]

Not too sure why - only thing I found was:

VxVM Root Disk Volume Restrictions

Volumes on a bootable VxVM-root disk have the following configuration restrictions:

All volumes on the root disk must be in the rootdg disk group.

The names of the volumes with entries in the LIF LABEL record must be standvol, rootvol, swapvol, and dumpvol (if present). The names of the volumes for other file systems on the root disk are generated by appending vol to the name of their mount point under /.

Any volume with an entry in the LIF LABEL record must be contiguous. It can have only one subdisk, and it cannot span to another disk.

The rootvol and swapvol volumes must have the special volume usage types root and swap respectively.

Only create a VxVM root disk if you also intend to mirror it. There is no benefit in having a non-mirrored VxVM root disk for its own sake.

Rgds...Geoff